Transmission-gearing.



R. B. JACKSON. n Tnmsmssmx ezmlm.

vAPPLIUATIQI FILED HAI '1,' 1909. y v rlatanted May 28, 19.12.

2 SHEETS-SHEET 1`.'

B.. B. JAGKSON.

TRANSMISSION BEARING.

'. urmoulol Hmm In 7, 1909.

' Patented May 28,1912.

2 SHEETS-SHEET 2.

ff U9 T21 W? z asf/es ma( WM UNITED sTATEs PATENT OFFICE.

Roscoe B. JACKSON, OF DETROIT, mcIIIGAN, 'AssIofNOIzl TO vHUDSON MOTOR. OAR

- OOMPANY, or DETROIT, MICHIGAN, A CORPORATION or MICHIGAN.

TRANSMISSION-GEABING.'

V Patented May 2,1912.

- Applieaaon mea may 7, 190s. serial No. 494,672.y

o all whom t may concern Be it known that I, Roscoe B. JACKSON, a citizen vof the United States of America, residing at Detroit, in the in the construction of the housing; second,

in the means for mounting the operating parts of the mechanism therein; third, in the.

construction and arrangement of the control mechanism; and fourth, in the peculiar construction, arrangement and combination of parts as hereinafter set forth.

In the drawings- Figure 1 is a` plan view'; 2 is a sectional end elevation; Fig. 3 is alongitudinal section substantially on line of Fig. 2'; Aand Fig. 4 is a perspective View of the gear shifting mechanism.

A is the housing, which is of the type commonly 'known as one-pieceL-that 1s, all of the space in whichv the gearing is located is inclosed by a single integral casting.

B and C are respectively the drive and driven shafts, which are arranged in axial alinement-and extend through bearings upon opposite ends of the case.

D and E are slidable gears feathered upon the driven shaft C, the gear D being provided with a clutch member E2 for engagement with a complementary clutch member Fupon the drive shaft.

H is a drive gearing preferably integral with the clutch member F, and I, J and K are gears upon a countershaft parallel to the driven shaft and adapted for engagement respectively with the gears H, D and E.

lL is a fourth countershaft gear which is arranged to cooperate with the gear E and a reverse pinion M for effecting the reverse drive ofthe shaft C. 1

To reduce the cost of manufacture, it is desirableto-avoid machining of the housing A as far as possible, and particularly machining on the inside of the case. To this county of Wayne and State of Michigan, have invented cerupon guides U U',

end, the bearings for the shafts B and C are formed bybushings N and O, which are' inserted in alined bores in opposite ends of the case. The gears H, D and E are engaged by an endwise movement with their respective shafts, and the inner ends of the bushings form end bearings for the gears, which avoids the machining of the inner wall of the case. The gears I, J, K and L are mounted -upon a sleeve or tubular shaft vP, which is of a length slightly less than the distance between the inner faces of the end walls, and which may be'inserted laterally through the opening in thel top of the case. This shaft is positioned by a stationary shaft or pin Q, which is inserted through a bore in one of the end walls ofthe case, and at its i-nner-end engages an alined socket in the opposite wall. The outer end of this pin or shaft is'enlarged to form ahead Q', which tits the bore in the outer wall of the case, and which projects inward a slight distance to form an end bearing for the shaft P. 'An inner bearing for the opposite end of the shaft P is formed by a hub or inward. projection S on the case, and the end of this bearing may be conveniently faced oft' bythe same tool employed forboring the socket which receives the inner end of the pinQ, the facing tool being per mitted'entrance into the case through the large bore in the opposite end wall. Thus .A opposite end bearings are provided for t-he shaft P without any 'machining other than that which can be performed simultaneously with the boring operation. Bushings R are rovided sleeved upon the pin Q to Aform ]ournal bearings for the opposite ends of theshaftl P, and these bushings are provided with flanges R which form end thrust bearings against the head Q and hub S.

For shifting the gears D and E, each is preferably -provided with a grooved collar D E', which are engaged by shifter arms T and T. These arms are slidably mounted which are detachably mounted in the case, the construction heilig as follows: The .rods U U are. arranged parallel to each other and engage alined bores in the opposite end walls of the case above the gearing. V V are sleeves forming the sliding bearings for the arms T T i jecting luglllT-whichkisapert-ured to receive a latch W', preferably a ball, and a spring 72, which is retained by a cap W3. The

balls W are adapted toengage a series of notches U2 in each of the rods U U, and which hold the gears in various positions-of adjustment.

The slides are operated by an armor lever X which is adjustable both laterally and longitudinally, and is engageable alternatively With recesses in the slidable sleeves V V. These recesses are formed by upwardlyprojecting lugs W4 on the sleeves recessed upon thelr inner faces andi lwhen arranged in registration form a lateral passage for the arm X from engagement with one of the sleeves into engagement with the other. A guard plate Y is arranged between the lugs W4 which is provided with a notch or cutout portion, which is in alinement with the recesses in said lugs when the latter are in registration, but in every other position of adjustment of either of the slides V V the plate Y will prevent late-ral movement of the arm X.V This guard plate Y is preferably formed integral with a head Y sleeved upon both of the rods- U U5, and this head also forms a stop for limiting the movement of the sleeves V V. A lock for preventing the simultaneous movement of the slides V V is formed by a ball Z which engages a notch in the plate Y and a registerng notch Z in one or the other of the slides V V. The notches Z are arranged opposite each other in the neutral position of the slidable sleeves V V-that is, where the recesses in the lugs W4 are in registration. This permits the ball Z to be moved through the notch in the plate Y into the opposite notch Z whenever one of the slides is adjusted from its neutral position, but after such adjustment the ball is held from movement and consequently locks the opposite slide to the plate Y so as to prevent movement thereof.

The rods U U are preferably locked in position by being pinned to their bearings in the case A, as shown in U3, and the plate Y and head Y are secured by pinning the latter to each of the rods U U', as shown at U". This arrangement permits of quickly and accurately assembling the parts in proper relation to each other, as each of the rods U U may be adjusted separately into proper relation to the head Y and pinned thereto, after'which both rods may be adjusted in their bearings in the case, and when in proper position may be pinned, or, if preferable, the parts may be assembled in reverse order, the rods U U being first secured in relation to the case and the head Y then secured in position upon the rods.

The operating arm or lever X-as already described-is movable both longitudinally and laterally of the casing, the former moverespond with said ment being for adjustment of the slides and the latter 'for .change of, engagement from one slide to the other. I preferably provide for this movement of the arm by universally pivoting it in a bearing on the case. Thus, as shown, the case A is provided with a cover having anupward extension A andat the upper end of this extension is a spherical socketA2 for engagement' with a spherical bearing X on the lever X. Thus the lever is free to be moved in any direction which permits of both the lateral movement or change of engagement with the slides and longitudinal movement or adjustment of the slides.

The gear wheels DY and E are feathered upon t-he shaft C and to this end a feather or key C is engaged with a key seat in the shaft. To secure this key in position, its opposite ends are notched at C2, and the shaftis riveted over or pinned into thisnotch so as to prevent disengagement of the key.

lVhat I claim as my invention is:

1. In a transmission gearing, the combination with a case having alined bores in opposite walls thereof, of a guide rod insertible through one of said bores into engagement with the other, a shifter slidably engaging said rod, a detent on said shifter for engaging a series of recesses in said rod, a member of the transmission gearing with which said shifter is engaged having a plurality of positions for operation, and means for securing said rod in aposition of adjustment in said alined bores where the points of engagement of said detent and recesses corpositions of adjustment of said shift-able member.

2. In a transmission gearing, the combination with a pair of independent-ly movable Shifters, of parallelly-arranged guide rods with which' said Shifters are respectively slidably engaged, acase having alined bear ings with which said rods are engaged by alongitudinal movement, a yoke extending between and engaging said rods forming stops for the respective Shifters, a detent for each shifter engageable with recesses in its corresponding guide rod, and means for ixedly securing said yoke to said rods, and independent means for fixedly securing said rods in said bearings.

3. In a transmission nation with a case, a guide rod ,engaging alined bores in the opposite walls of sai case, a shifter sleeved upon said rod intermediate said walls, a detent on said shifter engageable with a series of recesses in said rod, a stop for said shifter sleeved on said rod, means for ixedly securing said stop on gearing, the combisaid rod in proper relation to the points of engagement of said detent and recesses, and

means for xedly securing said rod in its.

bearings in said case. v 4. In a transmission gearing, the combmation with a case, of a pair of parallellyarranged guide rods engaging allned bearsaid rods having a ment of the i s 1n said case, independently movable Shifters slidably engaging their respective rods, an actuating member for alternatively operating said shifters, and movable latera y from engagement with one into engagement with the other, and a yokesleeved upon between -said Shifters.

5. In a transmission gearing, the combination with a case, of a pair of parallellyarranged guide rods engaging allned bearin s 1n said case, independently movable Shifters slidably engaging their respective rods, an actuatin member for alternatively engaging said shi ers, a guard plate between said Shifters for preventing change of engagement of said actuating member in lall ut one position of adjustment of said shift ers, and means for locking either one of saidv shifter'sto said guard plate upon the adjustopposite shifter from its neutral position.`

6. In a transmission gearing, the combi-- nation with a case inclosing the gearing and having a pair of yalined bores in opposite walls thereof adjacent the top, a pair. of guide rods each insertible longitudinally through one of said bores across the case above the gearing int-o engagement with the the case, and .means for loc complementary 'bore in the opposite wall of lng said rods within said bores in a predetermined posi.'- tion of` adjustment.

47. In a transmissiongearng, the combination with acase inolosing the gearing and having alining bores in lopposite walls thereof above-thegearing, a guide rod insertible longitudinally through. one of said bores- -across the case-into engagement with the other bore, a slide upon said rod, a 'stop upon the rodffor the slide, an operating arm for, said slide, and' means for-fixedly securing thc'stop to the rod in proper relation to the slie. f 8. In' a transmission gearing, the combination with a case, of a pair of 'parallelljr arranged guide rods, said case having alining, bearings therein with which said rodsl engage, independently movable Shifters slidab y engagingthelr respective rods, an actuating member for alternatively engaging said Shifters, means within'the case for preventing change of engagement of said actuating member in all but one position of. adjustment `of the Shifters-and for locking either one-of said shifters upon the adjustmentA of the other from its neutral position.

9. In atransmission gearing, thejcombiguard plate projecting nation with a case-having alin-edy bearings therein, of a pair of parallelly arrangedguide rods engaging said bearings, inde.

pendently movable shifters'slidably engag v ing their respect-ive rods and having slotted bearings, a lever'for alternatively engaging b e to the bearings, the latter being register-.a

permit `change vof en agement of the' lever,

and means inte osev between said slottedbearings for loc 'ng o ne shifter upon the adjustment of the other from its yneutral position.A

10. In a gearing, shifting forks having portions arranged slde by side when in neutral position, means for `shifting the forks, -means for supporting and guiding the forks in theirshifting movement, and means independent of said supporting and guiding' means for. theforks and operative by 4the,

"moved fork for locking the unshifted fork from movement, said means comprising a support extendiii'g -between portions of the forks and having atransverse passage opening through opposite-sides thereof, and a bolt slidable in the passage and coacting at its opposite ends respectively with the forks, the bolt and the forks being provided with coacting surfaces whereby the bolt is movedlengthwise inthe passage into engagement with the unshifted fork when the other fork is being shift-ed.

11. In a selective gearing, a case, shiftingforks 'within the case larranged side by `side 1 I when in neutral position, and meanslfor selecting and shifting any one of the forks including an element for coa-sting with the forks, a member for guiding such element in its selecting movement, the guide member ex.-

tendingbetween the portions of theforks withwh'ich said element c oaets and being fixed to "the case, and said element being -shiftable transversely 'of the guide member into engagement with eitherof the forks loo when the forks are in neutral position for i select-ing one of the forks, the .portion of said element coacting with the guidemember'and the forksbeingof -greater width than `the contiguous portion 'of the lguide MARY HNTER.' I 

